Summary: This document contains a summary of albedo estimates produced through 'Approach 2', including the figures listed below:
This figure shows several plots related to the final albedo estimates produced by Approach 2.
This figure shows an initial attempt at a mixed effects model analysis.
Correlation matrix of explanatory variables: It looks like 'Moose Density' and 'Roe Deer Density' are moderately correlated (~0.51).
Model in R: Random effect is month nested under site ("LocalityName")
model <- lmer(Composite_Albedo ~ Treatment +
Productivity_Index +
Clearcut_Lidar +
Moose_Density +
Red_Deer_Density +
Roe_Deer_Density +
(1 | LocalityName/Month),
data = model_data)
Model Output:
| Â | Composite_Albedo | ||
|---|---|---|---|
| Predictors | Estimates | CI | p |
| (Intercept) | 0.22319 | 0.16504 – 0.28133 | <0.001 |
| Treatment [open] | 0.02093 | 0.01816 – 0.02371 | <0.001 |
| Productivity_Index | -0.08045 | -0.15163 – -0.00927 | 0.027 |
| Clearcut_Lidar | -0.00781 | -0.01200 – -0.00362 | <0.001 |
| Moose_Density | 0.00087 | 0.00029 – 0.00145 | 0.003 |
| Red_Deer_Density | 0.00027 | -0.00130 – 0.00184 | 0.737 |
| Roe_Deer_Density | -0.00167 | -0.00306 – -0.00029 | 0.018 |
| Random Effects | |||
| σ2 | 0.00 | ||
| τ00 Month:LocalityName | 0.01 | ||
| τ00 LocalityName | 0.00 | ||
| ICC | 0.95 | ||
| N Month | 12 | ||
| N LocalityName | 37 | ||
| Observations | 888 | ||
| Marginal R2 / Conditional R2 | 0.120 / 0.953 | ||
Exploring Model Fit:
This section shows relevant data and albedo estimates for each SustHerb site.
## Site: bratsberg
## Site: didrik_holmsen
## Site: drangedal1
## Site: drangedal3
## Site: drangedal4
## Site: eidskog
## Site: fet_3
## Site: fritsoe1
## Site: fritsoe2
## Site: furesdal
## Site: halvard_pramhus
## Site: hi_tydal
## Site: kviteseid1
## Site: kviteseid2
## Site: kviteseid3
## Site: malvik
## Site: namdalseid_1kub
## Site: nome_cappelen1
## Site: nome_cappelen2
## Site: notodden3
## Site: notodden5
## Site: notodden6
## Site: nsb_verdal
## Site: selbu_flub
## Site: selbu_kl
## Site: selbu_sl
## Site: singsaas
## Site: sl_tydal
## Site: stangeskovene_aurskog
## Site: stangeskovene_eidskog
## Site: steinkjer_1bbb
## Site: steinkjer_2bbb
## Site: stig_dahlen
## Site: sub_namdalseid
## Site: truls_holm
## Site: verdal_1vb
## Site: verdal_2vb